Add test_notification model to Prisma schema

prisma/migrations/20250423190419_test_notification/migration.sql

@@ -0,0 +1,7 @@
+-- CreateTable
+CREATE TABLE "test_notification" (
+    "id" SERIAL NOT NULL,
+    "notificationId" INTEGER NOT NULL,
+
+    CONSTRAINT "test_notification_pkey" PRIMARY KEY ("id")
+);

prisma/schema.prisma

@@ -97,4 +97,9 @@ model notification {
   pushoverUrl   String?
   pushoverToken String?
   pushoverUser  String?
-}
+}
+
+model test_notification {
+  id            Int       @id @default(autoincrement())
+  notificationId Int
+}